package com.learn.netty.simple;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.util.CharsetUtil;


/**
 * 一些声明信息
 * Description: <br/>
 * date: 2020/11/22 22:03<br/>
 *
 * @author ${李佳乐}<br/>
 * @since JDK 1.8
 */
public class NettyClientHandler extends ChannelInboundHandlerAdapter {
    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        System.out.println("client: " + ctx);
        ctx.writeAndFlush(Unpooled.copiedBuffer("hello,服务端", CharsetUtil.UTF_8));
    }

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        ByteBuf buf = (ByteBuf) msg;
        System.out.println("服务器回复的消息: " + buf.toString(CharsetUtil.UTF_8));
        System.out.println("服务器的地址: " + ctx.channel().remoteAddress());
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        cause.printStackTrace();
        ctx.close();
    }
}
